ITEM NAME:3Pcs Hexagon Space For Adaptor Socket Adaptor Socket Spanner 1/4", 1/2", 3/ J2G6 3Pcs Hexagon Space For Adaptor Socket Adaptor Socket Spanner 1/4", 1/2", 3/ J2G6 Allows you to mix and combine player sizes for your shots, ratchet handles, extensions and other accessories. The spring ball bearing on the head rests the holds securely. Suitable for Quick Change 1/4 in Chuck Systems or directly in the drill This set is perfect for your impact driver or drill, and allows you to replace your ratchet with a power tool. Hex shank fits all quick-change chucks and standard Turns any electric drill into an electric nut driver; packaged display. Saves time on traditional manual braces. for heavy impact engines. colour:black Material:Chrome vanadium steel hex shank adapter post size:12.5mm ,10 mm ,6.35mm converter includes sizes 1/2-inch (F) * 8/3 in (M), 3/8-inch (F) * 1/4-inch (M), 3/8-inch (F) ) * 1/2 inches (M), 4/1 inches (F) * 8/3 inches (M). Quantity:7pcs/set Package Contents: 3* hex shank adapter post 4* sleeve adapter